<template>
  <div class="cart">
    <Header/>
    <div class="cart-info">
        <h3 class="cart-top">购物车结算 <span>共{{this.order_data.length}}门课程</span></h3>
        <div class="cart-title">
           <el-row>
             <el-col :span="2">&nbsp;</el-col>
             <el-col :span="10">课程</el-col>
             <el-col :span="8">有效期</el-col>
             <el-col :span="4">价格</el-col>
           </el-row>
        </div>
        <div class="cart-item" v-for="order,index in order_data" :key="index">
          <el-row>
             <el-col :span="2" class="checkbox">&nbsp;&nbsp;</el-col>
             <el-col :span="10" class="course-info">
               <img :src="order.course_img" alt="">
                <span>{{order.name}}</span>
             </el-col>
             <el-col :span="8"><span>{{order.expire}}</span></el-col>
             <el-col :span="4" class="course-price">¥{{order.real_price}}</el-col>
           </el-row>
        </div>

        <div class="discount">
          <div id="accordion">
            <div class="coupon-box">
              <div class="icon-box">
                <span class="select-coupon">使用优惠劵：</span>
                <a class="select-icon unselect" :class="use_coupon?'is_selected':''" @click="use_coupon=!use_coupon"><img class="sign is_show_select" src="@/assets/alipay2.png" alt=""></a>
                <span class="coupon-num">有{{coupon_list.length}}张可用</span>
              </div>
              <p class="sum-price-wrap">商品总金额：<span class="sum-price">0.00元</span></p>
            </div>
            <div id="collapseOne" v-if="use_coupon">
              <ul class="coupon-list"  v-if="coupon_list.length>0">
                <li class="coupon-item" v-for="coupon,index in coupon_list" :key="coupon.id" :class="selected_coupon(index,coupon.id)" @click="click_coupon(coupon.id,coupon.coupon.sale)">
                  <p class="coupon-name">{{coupon.coupon.name}}</p>
                  <p class="coupon-condition">满{{coupon.coupon.condition}}元可以使用</p>
                  <p class="coupon-time start_time">开始时间：{{coupon.start_time.replace("T"," ")}}</p>
                  <p class="coupon-time end_time">过期时间：{{coupon.end_time.replace("T"," ")}}</p>
                </li>
              </ul>
              <div class="no-coupon" v-if="coupon_list.length<1">
                <span class="no-coupon-tips">暂无可用优惠券</span>
              </div>
            </div>
          </div>
          <div class="credit-box">
            <label class="my_el_check_box"><el-checkbox class="my_el_checkbox" v-model="use_credit"></el-checkbox></label>
            <p class="discount-num1" v-if="!use_credit">使用我的贝里</p>
            <p class="discount-num2" v-else><span>总积分：100，已抵扣 ￥0.00，本次花费0积分</span></p>
          </div>
          <p class="sun-coupon-num">优惠券抵扣：<span>0.00元</span></p>
        </div>

        <div class="calc">
            <el-row class="pay-row">
              <el-col :span="4" class="pay-col"><span class="pay-text">支付方式：</span></el-col>
              <el-col :span="8">
                <span class="alipay"><img src="@/assets/alipay2.png" alt=""></span>
                <span class="alipay wechat"><img src="@/assets/wechat.png" alt=""></span>
              </el-col>
              <el-col :span="8" class="count">实付款： <span>¥{{t_price}}</span></el-col>
              <el-col :span="4" class="cart-pay"><span @click="payhander">支付宝支付</span></el-col>
            </el-row>
        </div>
    </div>
    <Footer/>
  </div>
</template>

<script>
  import Header from "./common/Header"
  import Footer from "./common/Footer"
  export default {
    name:"Order",
    data(){
      return {
        id: localStorage.id || sessionStorage.id,
        order_id:sessionStorage.order_id || null,
        order_data: [],
        total_price: 0,
        t_price:0,
        pay_type: 0,
        credit:0,
        coupon:0,
        use_coupon:false,
        use_credit:false,
        coupon_list:[],
      }
    },
    components:{
      Header,
      Footer,
    },
    created(){
        this.get_order(),
        this.get_coupon()
    },
    methods: {
      click_coupon(id,sale){
        this.coupon = id;
        if(sale[0]=='-'){
          this.t_price = this.total_price-parseFloat(sale.slice(1))
        }else{
          this.t_price = this.total_price*parseFloat(sale.slice(1))
        }
        },
      get_order(){
            let token = localStorage.getItem('token') || sessionStorage.getItem('token');
            this.$axios.get(`${this.$settings.Host}/order`,{headers:{'Authorization': 'jwt '+token}})
            .then(res=>{this.order_data=res.data;this.calc_price();})
            .catch(error=>{this.$message.warning('购物车中未有勾选的商品');this.$router.go('-1');})
        },
      payhander(){
            let token = localStorage.getItem('token') || sessionStorage.getItem('token');
            this.$axios.post(`${this.$settings.Host}/order/create/`,{
              pay_type: this.pay_type,  // 支付方式
              credit: this.credit,      // 积分
              coupon: this.coupon, 
            },{headers:{'Authorization': 'jwt '+token}})
            .then(res=>{this.$message.success("订单生成成功！即将跳转到支付页面，请不要眨眼！",this.aliapy(res.data.order_number))})
            .catch(error=>{this.$message.error("订单生成失败！");})
      },
      calc_price(){
        this.order_data.forEach((v,k)=>{
          this.total_price += parseFloat(v.real_price);
        });
        this.t_price = this.total_price;
      },
      selected_coupon(key, user_coupon_id){
           // 当选中优惠券时，切换优惠券的高亮显示效果
          let user_coupon = this.coupon_list[key];
          // 判断总价格是否满足优惠券的使用
          if(this.total_price < user_coupon.coupon.condition ){
              return "disable";
          }
          // 判断优惠券是否处于使用时间范围内
          let start_timestamp = parseInt(new Date(user_coupon.start_time) / 1000);
          let end_timestamp = parseInt(new Date(user_coupon.end_time) / 1000);
          let now_timestamp = parseInt(new Date() / 1000);
          if( (now_timestamp < start_timestamp) || (now_timestamp > end_timestamp) ){
              return "disable";
          }

          if( this.coupon == user_coupon_id ){
              return "active";
          }

          return "";
      },
      get_coupon(){
          let token = localStorage.getItem('token') || sessionStorage.getItem('token');
          this.$axios.get(`${this.$settings.Host}/coupon/list/`,{headers:{'Authorization': 'jwt '+token}})
          .then(res=>{this.coupon_list=res.data;})
          .catch(error=>{})
      },
      aliapy(order_number){
          let token = localStorage.getItem('token') || sessionStorage.getItem('token');
          this.$axios.get(`${this.$settings.Host}/payments/alipay?order_number=${order_number}`,{headers:{'Authorization': 'jwt '+token}})
          .then(res=>{location.href=res.data})
          .catch(error=>{})
      }
    }
  }
</script>

<style scoped>
.coupon-box{
  text-align: left;
  padding-bottom: 22px;
  padding-left:30px;
  border-bottom: 1px solid #e8e8e8;
}
.coupon-box::after{
  content: "";
  display: block;
  clear: both;
}
.icon-box{
  float: left;
}
.icon-box .select-coupon{
  float: left;
  color: #666;
  font-size: 10px;
}
.icon-box::after{
  content:"";
  clear:both;
  display: block;
}
.select-icon{
  width: 20px;
  height: 20px;
  float: left;
}
.select-icon img{
  max-height:100%;
  max-width: 100%;
  margin-top: 2px;
  transform: rotate(-90deg);
  transition: transform .5s;
}
.is_show_select{
  transform: rotate(0deg)!important;
}
.coupon-num{
    height: 22px;
    line-height: 22px;
    padding: 0 5px;
    text-align: center;
    font-size: 12px;
    float: left;
    color: #fff;
    letter-spacing: .27px;
    background: #fa6240;
    border-radius: 2px;
    margin-left: 20px;
}
.sum-price-wrap{
    float: right;
    font-size: 16px;
    color: #4a4a4a;
    margin-right: 45px;
}
.sum-price-wrap .sum-price{
  font-size: 18px;
  color: #fa6240;
}

.no-coupon{
  text-align: center;
  width: 100%;
  padding: 50px 0px;
  align-items: center;
  justify-content: center; /* 文本两端对其 */
  border-bottom: 1px solid rgb(232, 232, 232);
}
.no-coupon-tips{
  font-size: 16px;
  color: #9b9b9b;
}
.credit-box{
  height: 30px;
  margin-top: 40px;
  display: flex;
  align-items: center;
  justify-content: flex-end
}
.my_el_check_box{
  position: relative;
}
.my_el_checkbox{
  margin-right: 10px;
  width: 16px;
  height: 16px;
}
.discount{
    overflow: hidden;   
}
.discount-num1{
  color: #9b9b9b;
  font-size: 16px;
  margin-right: 45px;
}
.discount-num2{
  margin-right: 45px;
  font-size: 16px;
  color: #4a4a4a;
}
.sun-coupon-num{
  margin-right: 45px;
  margin-bottom:43px;
  margin-top: 40px;
  font-size: 16px;
  color: #4a4a4a;
  display: inline-block;
  float: right;
}
.sun-coupon-num span{
  font-size: 18px;
  color: #fa6240;
}
.coupon-list{
  margin: 20px 0;
}
.coupon-list::after{
  display: block;
  content:"";
  clear: both;
}
.coupon-item{
  float: left;
  margin: 15px 8px;
  width: 180px;
  height: 100px;
  padding: 5px;
  background-color: #fa3030;
  cursor: pointer;
}
.coupon-list .active{
  background-color: #fa9000;
}
.coupon-list .disable{
  cursor: not-allowed;
  background-color: #fa6060;
}
.coupon-condition{
  font-size: 12px;
  text-align: center;
  color: #fff;
}
.coupon-name{
  color: #fff;
  font-size: 24px;
  text-align: center;
}
.coupon-time{
  text-align: left;
  color: #fff;
  font-size: 12px;
}
.unselect{
  margin-left: 0px;
  transform: rotate(-90deg);
}
.is_selected{
  transform: rotate(-1turn)!important;
}
.cart{
  margin-top: 80px;
}
.cart-info{
  overflow: hidden;
  width: 1200px;
  margin: auto;
}
.cart-top{
  font-size: 18px;
  color: #666;
  margin: 25px 0;
  font-weight: normal;
}
.cart-top span{
    font-size: 12px;
    color: #d0d0d0;
    display: inline-block;
}
.cart-title{
    background: #F7F7F7;
    height: 70px;
}
.calc{
  margin-top: 25px;
  margin-bottom: 40px;
}

.calc .count{
  text-align: right;
  margin-right: 10px;
  vertical-align: middle;
}
.calc .count span{
    font-size: 36px;
    color: #333;
}
.calc .cart-pay{
    margin-top: 5px;
    width: 110px;
    height: 38px;
    outline: none;
    border: none;
    color: #fff;
    line-height: 38px;
    background: #ffc210;
    border-radius: 4px;
    font-size: 16px;
    text-align: center;
    cursor: pointer;
}
.cart-item{
  height: 120px;
  line-height: 120px;
  margin-bottom: 30px;
}
.course-info img{
    width: 175px;
    height: 115px;
    margin-right: 35px;
    vertical-align: middle;
}
.alipay{
  display: inline-block;
  height: 48px;
}
.alipay img{
  height: 100%;
  width:auto;
}

.pay-text{
  display: block;
  text-align: right;
  height: 100%;
  line-height: 100%;
  margin-top: 20px;
}
</style>